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. 2022 Sep 12;4(11):e804. doi: 10.1016/S2665-9913(22)00257-0

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Skin lesion on the left hand (A), swelling of the right knee (B), MRI* of synovitis with subchondral demarcation zone (red circle; C), MRI† with marked oedema of the medial femoral condyle with subchondral demarcation zone (red circle; D), and MRI‡ of joint effusion, marked oedema (green arrow) and subchodral demarcation zone (red circle; E)

* T1-weighted (longitudinal relaxation time) turbo-spin-echo with fat saturation. †T1-weighted (longitudinal relaxation time) turbo inversion recovery magnitude. ‡Proton-density weighted fat suppression fast spin echo sequence.